/* ============================================================
   広告講座の全体道標
   ------------------------------------------------------------
   最初に学ぶ共通基礎と、その後の媒体別実践の関係を一画面で示す。
   ============================================================ */

.learning-path {
  position: relative;
  overflow: hidden;
  margin: 0 0 clamp(28px, 4vw, 42px);
  padding: clamp(22px, 4vw, 38px);
  border: 1px solid color-mix(in srgb, var(--color-accent, #16a394) 26%, var(--color-border, #e4e4ef));
  border-radius: clamp(20px, 3vw, 30px);
  background: linear-gradient(135deg, #f0fdfa 0%, #ffffff 54%, #eff6ff 100%);
  box-shadow: 0 18px 48px rgba(15, 118, 110, .09);
}

.learning-path::after {
  position: absolute;
  top: -148px;
  right: -92px;
  width: 270px;
  aspect-ratio: 1;
  border: 1px solid rgba(13, 148, 136, .2);
  border-radius: 50%;
  content: "";
  pointer-events: none;
}

.learning-path__head,
.learning-path__steps,
.learning-path__action {
  position: relative;
  z-index: 1;
}

.learning-path__head {
  max-width: 700px;
}

.learning-path__eyebrow {
  display: inline-flex;
  margin: 0 0 10px;
  padding: 5px 10px;
  border: 1px solid rgba(13, 148, 136, .25);
  border-radius: 999px;
  color: #0f766e;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .1em;
}

.learning-path__title {
  margin: 0;
  color: var(--color-text, #1f1b2d);
  font-size: clamp(23px, 4vw, 37px);
  line-height: 1.27;
  letter-spacing: -.035em;
}

.learning-path__lead {
  max-width: 600px;
  margin: 13px 0 0;
  color: var(--color-text-soft, #5e5870);
  font-size: 14px;
  line-height: 1.8;
}

.learning-path__steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 25px 0 18px;
  padding: 0;
  list-style: none;
}

.learning-path__step {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 10px;
  min-width: 0;
  padding: 14px;
  border: 1px solid rgba(13, 148, 136, .16);
  border-radius: 15px;
  background: rgba(255, 255, 255, .8);
}

.learning-path__step[data-current="true"] {
  border-color: rgba(13, 148, 136, .48);
  background: #ecfdf5;
  box-shadow: 0 8px 18px rgba(13, 148, 136, .09);
}

.learning-path__number {
  display: grid;
  width: 28px;
  height: 28px;
  place-items: center;
  border-radius: 50%;
  background: #ccfbf1;
  color: #0f766e;
  font-size: 12px;
  font-weight: 900;
}

.learning-path__step[data-current="true"] .learning-path__number {
  background: #0f766e;
  color: #fff;
}

.learning-path__copy {
  display: grid;
  gap: 3px;
  min-width: 0;
}

.learning-path__copy strong {
  color: #0f766e;
  font-size: 11px;
  line-height: 1.3;
}

.learning-path__copy > span {
  color: var(--color-text, #1f1b2d);
  font-size: 13px;
  font-weight: 800;
  line-height: 1.45;
}

.learning-path__copy small {
  color: var(--color-text-muted, #777184);
  font-size: 11px;
  line-height: 1.5;
}

.learning-path__action {
  display: grid;
  gap: 10px;
  max-width: 430px;
}

.learning-path__primary {
  width: 100%;
  min-height: 47px;
  justify-content: center;
  border-radius: 12px;
  text-align: left;
}

.learning-path__review {
  width: fit-content;
  padding: 0;
  border: 0;
  background: transparent;
  color: #0f766e;
  font: inherit;
  font-size: 12px;
  font-weight: 800;
  text-decoration: underline;
  text-underline-offset: 3px;
  cursor: pointer;
}

/* Webマーケティング基礎のレッスン上部に出す現在地。 */
.marketing-lesson-context {
  display: grid;
  gap: 8px;
  margin: 0 0 26px;
  padding: 14px 16px;
  border: 1px solid rgba(13, 148, 136, .25);
  border-left: 4px solid #0f766e;
  border-radius: 12px;
  background: #f0fdfa;
}

.marketing-lesson-context__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 7px;
  color: #0f766e;
  font-size: 12px;
  font-weight: 700;
}

.marketing-lesson-context__meta span + span::before {
  margin-right: 7px;
  color: var(--color-text-muted, #777184);
  content: "／";
}

.marketing-lesson-context__meta strong {
  padding: 3px 8px;
  border-radius: 999px;
  background: #ccfbf1;
}

.marketing-lesson-context p {
  margin: 0;
  color: var(--color-text-soft, #5e5870);
  font-size: 13px;
  line-height: 1.7;
}

.marketing-lesson-context__home {
  width: fit-content;
  padding: 0;
  border: 0;
  background: transparent;
  color: #0f766e;
  font: inherit;
  font-size: 12px;
  font-weight: 800;
  text-decoration: underline;
  text-underline-offset: 3px;
  cursor: pointer;
}

@media (max-width: 720px) {
  .learning-path__steps {
    grid-template-columns: 1fr;
  }

  .learning-path__title br {
    display: none;
  }
}

@media (max-width: 420px) {
  .learning-path {
    padding: 22px 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .learning-path *,
  .marketing-lesson-context * {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}